1197628049 has 2 divisors, whose sum is σ = 1197628050. Its totient is φ = 1197628048.

The previous prime is 1197628043. The next prime is 1197628073. The reversal of 1197628049 is 9408267911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 778689025 + 418939024 = 27905^2 + 20468^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1197628049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1197627994 and 1197628012.

It is not a weakly prime, because it can be changed into another prime (1197628043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598814024 + 598814025.

It is an arithmetic number, because the mean of its divisors is an integer number (598814025).

Almost surely, 2^1197628049 is an apocalyptic number.

It is an amenable number.

1197628049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1197628049 is an equidigital number, since it uses as much as digits as its factorization.

1197628049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 1197628049 is about 34606.7630529063. The cubic root of 1197628049 is about 1061.9579478976.

The spelling of 1197628049 in words is "one billion, one hundred ninety-seven million, six hundred twenty-eight thousand, forty-nine".